Mary Karen O'Shaughnessy

Mary Karen O'Shaughnessy is a real estate agent with Houlihan Lawrence Inc. in Bronxville. MLS records credit Mary Karen with 7 transactions over the last 12 months, worth $14.3 million in total sales volume. Across both sides of the deal, that is an average of $2,042,500 per transaction.

4.5 of those transactions were on the listing side, representing sellers, for $7.7 million. The other 2.5 were on the selling side, representing buyers, for $6.6 million. Most of the work, 64 percent, is on the listing side, so Mary Karen is more often the agent a seller hires.

The average price differs by side: $1,702,778 for listings and $2,654,000 for buyer-side sales.

By sales volume, Mary Karen ranks 12th of the 84 agents in Bronxville with recorded sales, ahead of 86 percent of them. The typical agent there closed 3.5 transactions worth $2.5 million, so Mary Karen's volume is about 5.7 times the local median.

Statewide, Mary Karen is 706th by volume among 14,678 New York agents with recorded sales.

In ZIP code 10708, the address on Mary Karen's MLS record, the median sold price was $1,327,000 across 19 sales between June 2026 and July 2026. Mary Karen's average transaction of $2,042,500 is about 1.5 times that median, which points to higher-priced homes than the ZIP code as a whole.

Mary Karen is listed with Houlihan Lawrence Inc., Bronxville. Other agents on the same office record, busiest first:

• Susan Kelty Law22 transactions · 38.3M volume
• Megan McSherry20 transactions · 33.9M volume
• Andrew Korb8 transactions · 19.4M volume
• Elizabeth Campbell10 transactions · 18.8M volume
• Daria Kelty19.5 transactions · 14M volume
• Leslie Corcoran11.5 transactions · 11.1M volume

These other Bronxville agents also have recorded sales in the last 12 months. They are ranked by sales volume. Compare a few before you pick someone to interview.

• Sheila Stoltz35 transactions · 93.1M volume
• Jake Garay44 transactions · 32.2M volume

The numbers on this page come from public MLS and license records, last updated May 2026. Transaction counts and dollar volumes cover the last 12 months and are credited to the agent named on each record. Mary Karen has not claimed this profile, and a listing here does not mean Mary Karen or Houlihan Lawrence Inc. endorses or is affiliated with Expert Agents Near Me. We collect no reviews, so there are no ratings from us on this page.